Science 4th, unit 7
Feb, 2014
Science 4th grade
UNIT 7
ENERGY AND THE ENVIRONMENT
J. Cesar Brazo Mur
El Tomillar, J.C. Brazo
1
Science 4th, unit 7
Feb, 2014
ENERGY has always existed
We can find energy all around us
El Tomillar, J.C. Brazo
2
Science 4th, unit 7
Feb, 2014
ENERGY cannot be created or destroyed. It can only be TRANSFORMED INTO OTHER TYPES OF ENERGY Examples Electrical energy
Chemical energy
Sound energy or light
Heat and motion
El Tomillar, J.C. Brazo
3
Science 4th, unit 7
Renewable no yes Main ones
Feb, 2014
SOURCES OF Non-renewable ENERGY Do they pollute? yes Can be replaced?
no Main ones
Solar energy
Nuclear energy
Hydropower
Fossil fuels
Wind energy Geothermal energy
- Coal - Oil - Natural gas
Biomass
El Tomillar, J.C. Brazo
4